Title:
非晶質合金粉末、圧粉磁心、磁性素子および電子機器
Document Type and Number:
Japanese Patent JP6446863
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide: amorphous alloy powder which enables the manufacturing of a powder-compact magnetic core capable of achieving both of a high saturation magnetic flux density and a low iron loss even under a high frequency condition; a high-performance powder-compact magnetic core manufactured by use of such amorphous alloy powder; a high-performance magnetic device including such a powder-compact magnetic core; and a reliable electronic device including such a magnetic device.SOLUTION: A choke coil (magnetic device) 10 comprises: a ring-like powder-compact magnetic core 11; and a conducting wire 12. The powder-compact magnetic core 11 includes amorphous alloy powder of the present invention. In the amorphous alloy powder of the present invention, D90/D10 is 3.3-6.5; D50 is 5-20 μm; the magnetic moment per unit mass is 120-210 [emu/g]; the coercive force is 0.1-2 [Oe]; and the content of oxygen is 100-3000 ppm on a mass ratio basis.
Inventors:
Yu Maeda
Atsushi Watanabe
Sato Fuyutsu
Atsushi Watanabe
Sato Fuyutsu
Application Number:
JP2014135309A
Publication Date:
January 09, 2019
Filing Date:
June 30, 2014
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H01F1/147; B22F1/00; C22C45/02; H01F1/24; H01F27/255
Domestic Patent References:
| JP2013213247A | ||||
| JP2004156134A | ||||
| JP2014033001A | ||||
| JP2007291454A | ||||
| JP2010007100A | ||||
| JP2005307291A | ||||
| JP11214210A | ||||
| JP2005347641A |
Attorney, Agent or Firm:
Tatsuya Masuda
Kazuo Asahi
Kazuo Asahi